738 SCIENTIFIC KECOKD FOR 18S&. 



Matthew, G. F. — (On the Probable Occurrence of the Great Welsh 

 Paradoxides (P. davidis) in America. Nature^ vol. xxxii, p. 358. 

 1885. London and New York. 

 Notice and abstract of Mr. Matthew's paper in the Amer. Jour. Sci. 



Matthew, G. F. — Note on the Genus Stenotheca. Geol. Mag., new 

 series. Decade III, vol. ii, pp. 425, 426. Sep>tember, 1885. London. 

 Remarks on species from the Saint John group of Nova Scotia. The 



author mentions five species as occurring in the Saint John group, and 



makes some remarks on their affinities and habitat. 



Matthew, G. F. —Notice of a New Genus of Pteropods from the Saint 

 John Group (Cambrian). Amer. Jour. iSci., od ser., vol. xxx, pp. 293, 

 294, figs. 1-3 on p. 294. October, 1885. New Haven. 



Describes the new genus Diplotlieca acadwa Hartt, sj). var. crassa, D. 

 Eyaitiana, and D. Hyattiana var. candata. 



Matthew, G. F. — Illustrations of the Pauua of the Saint John Group 

 continued. On the Conocoryphea, with further remarks on Paradox- 

 ides. Trans. Boy. Soc. Canada, vol. ii, section iv, 1884, pp. 99-124, 

 pi. i. (1885. Montreal.) 



The author gives further descriptions of Paradoxides acadiciis, fig. i, 

 of the young of the species ; also describes Paradoxides lamellatus Hartt, 

 figs. 3 and 4. On fig. 5 the author reproduces a pygidium incorrectly 

 figured in connection with his former paper. {See fig. 15, pi. x, vol. i. 

 Trans. Boy. Soo. of Canada.) The author suggests that the name Para- 

 doxides Micmae be applied to the species fig. 8, pi. x, vol. i, Tr-ans.Boy. 

 Soc. of Canada. This is probably the specimen figured in "Acadian 

 Geology." The author divides Conocoryphea into two groups : Ctenoce- 

 phalus Corda iiud Conocoryphea Corda; gives a detailed description of 

 Ctenocephalus Matthcici Hartt sp. (figs. 6-21, pp. 103-111) and its devel- 

 opment and growth. The same thing is done for Conocoryphe Baileyi 

 Hartt sp. (figs. 22-27, pp. 111-114), and Conocoryphe elegans Hartt sp. 

 (figs. 28-34, i)p. 115-119). The author also describes the new species 

 Conocoryphe Walcotti (figs. 36 and 36&, pp. 119,120). Makes general 

 comparisons and conclusions on pp. 120-123. 



[Milne, Edwards H.].— Structure des Trilobltes. Ann. des Sci. Nat, 

 Sixi^me S6r., vol. xii. Art. 3, p. 33, pis. i-iii. 1881. Paris. 

 A review of C. D. Walcott's Organization of Trilobites. (Not seen.) 



Morris, Charles. — The Primary Conditions of Fossilization. Proc. 



Acad. Nat., Sci. Philad., vol. — , pp. 97-101. July, 1885. Philadelphia. 



An interesting paper containing some slight discrepancies and with 

 some of the premises of which many people will disagree. The author 

 reaches the conclusion that "fossilization of animal forms was not pos- 

 jjible until, after a long. period of evolution, the power of secreting hard 



